Chevrolet "Open Chamber" Cast Iron Cylinder Heads
We have been working with the Chevy "Open Chamber" heads for years. We know the best casting number heads and how to make them come alive. If your rules require the use of “open chamber” heads, the ‘441, ‘487 & ‘993 heads work the best. While these heads are not available new from Chevrolet we have an excellent supply. We can also modify your |
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Our "UnderCover Porting" will improve the air flow of stock open chamber heads from 203 cfm intake and 142 cfm exhaust to 225 / 230 cfm intake and 160 cfm exhaust. This air flow improvement will result in a 15 to 25 horsepower improvement while maintaining a stock looking port!
Our Complete "Open Chamber" Heads include
- Pressure tested and magnifluxed castings
- "UnderCover Ported" * Machined for screw-in studs
- Pushrod holes opened * New valve guides
- Surfaced to your specifications * ARP rocker studs & guide plates
- 5000 series Ferrea valve
- Steel retainers & machined locks
- Competely Assembled
We have an excellent selection of '441, '487 & '993 heads available. All castings have new valve guides, pressure tested and machined for screw-in studs. Note: Heads without guide plates and / or press in studs are also available.
Price |
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LMS-OC-UC |
Complete Open Chamber heads ('441, '487 or '993) with "UnderCover Porting". Assembled with Ferrea 5000 series valves, flat tappet springs, steel retainers, machined locks, rocker studs and guide plates. Flat surfaced to your specifications. |
$2,195.00 |
OC-UC |
'441, 487 or '993 castings, bare, machined for screw-in studs, new guides & "UnderCover Porting". |
1,495.00 |
| OC-SST | '441, 487 or '993 castings, bare, machined for screw-in studs, new guides & S.S.T Porting. |
1,695.00 |
Free Custom Camshaft: Now, with your purchase of a complete set of modified heads and a matching, modified intake, we will supply a custom ground flat tappet camshaft designed specifically for your application. The custom flat tappet camshaft, which normally would cost $185.00, will cost you nothing!
Cylinder Head Design Form: Fill out our online form for a recommendation and pricing on a set of heads built specifically for your application. Also, here is a link to more detailed information on our Complete Cylinder Head Assemlies.
Sending your cylinder heads to us for modifications?
Brzezinski Racing Products, Inc. The #1 Name in Cast Iron. Call us toll free at 866-236-6300
 - Click here to sign up for the Brzezinski Email Newsletter - New! Combination SBC and LS1 Slider. We combined the bolt pattern on these 2 popular sliders to give you 2 Sliders for the price of one. - New "Look-A-LIke" retainers for the '604 Crate Motor. - New Crate Motor “Look-A-Like” Replacement Valve Springs  |